The last detail to discuss about the if statements is comments. Here is an example.

Two things require an attention here. The first one is the condition side comment. The side comment needs to be aligned with the condition lines so it has to be exactly to the right of the decision block. On the other hand there is a connector of the branch at the right which will be crossed by the side comment one way or another while it definitely would be better to avoid any kind of crossing. So a tough decision was made: there will be crossing connectors and the comment connector will be drawn shifted down. A mitigating factor to this decision is that the side comments for the if statements are rare.

The second detail is the else leading comment. The else keyword in the text editor corresponds to a connector in graphics so the else leading comment becomes looking exactly as an independent one.